Our USB to Parallel Bi-Directional Cable allows your PC to print to most parallel devices connected through the USB port. Just plug the USB connector of the cable into the USB port of your PC and the other end into the existing parallel cable that came with your device. Works great with HP printers that have the HP Centronics connector. Plus, the device's USB interface provides up to 12Mbps data throughput, so printing is much faster compared with standard parallel port (150kbs) connection. The USB-to-Parallel cable also features bi-directional communication, allowing the computer to correctly retrieve the message reported from the printer.